On Jan 27, 2009, at 11:31 PM, mos wrote:
Are date columns stored as String or Integer in a MyISAM table?
I am trying to squeeze more speed from my application and a date
column is used in most of the indexes for my tables. I'm wondering
if changing the Date data type to an Integer is going to speed the
queries up. I'm using Delphi and internally it represents dates as
float so using integers will speed up the Delphi code. But the main
slow down I have is with executing the queries. The dates are used
in the indexes, sorting, and in a few table joins. So is there a
speed advantage of switching the dates to integer?
Dates are stored numerically. See:
http://dev.mysql.com/doc/refman/5.1/en/storage-requirements.html
Beginning with "The storage requirements shown in the table arise from
the way that MySQL represents temporal values ..."
--
Paul DuBois
Sun Microsystems / MySQL Documentation Team
Madison, Wisconsin, USA
www.mysql.com
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